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US6652508B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Intravascular microcatheter having hypotube proximal shaft with transition

Assignee: Boston Scientific Scimed Inc
•
Filing: 2001-11-09
•
Granted: 2003-11-25
•
Expires: 2021-11-09
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Abstract

Abstract An intravascular catheter including a proximal stiff metallic tube and a distal flexible tube. A distal portion of the metallic tube has a portion removed to define a void (e.g., spiral slot) which decreases the stiffness of the metallic tube. A proximal portion of the distal flexible tube is disposed in the void to provide a secure connection and to blend the stiffness of the metallic proximal tube and the flexible distal tube without significantly increasing profile.

Inventors

  • 👤 Stephen Griffin
  • 👤 Greg Mirigian
  • 👤 Tina Ye

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:05
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0043; A61M25/0045; A61M25/0021; A61M2025/0042; A61M25/0054

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 93 words
An intravascular catheter, comprising an elongate shaft having a proximal portion, a distal portion, and a transition region disposed therebetween, the proximal portion comprising a relatively stiff metallic tube, the distal portion comprising a relatively flexible tube including a coil reinforcement disposed between an inner layer and an outer layer, the transition portion comprising the metallic tube with at least a portion thereof removed to define at least one void, wherein a portion of the coil reinforcement is disposed in the void and wherein the outer layer extends proximally over the transition region.
Claim 2
Dependent Claim 93 words
An intravascular catheter, comprising an elongate shaft having a proximal portion, a distal portion, and a transition region disposed therebetween, the proximal portion comprising a relatively stiff metallic tube, the distal portion comprising a relatively flexible tube including a coil reinforcement disposed between an inner layer and an outer layer, the transition portion comprising the metallic tube with at least a portion thereof removed to define at least one void, wherein a portion of the coil reinforcement is disposed in the void and wherein the outer layer extends proximally over the transition region.
Claim 3
Dependent Claim 18 words
An intravascular catheter as in claim 1 , wherein the void decreases the stiffness of the metallic tube.
Claim 4
Dependent Claim 19 words
An intravascular catheter as in claim 2 , wherein the void gradually decreases the stiffness of the metallic tube.
Claim 5
Dependent Claim 14 words
An intravascular catheter as in claim 3 , wherein the void comprises a slot.
Claim 6
Dependent Claim 14 words
An intravascular catheter as in claim 4 , wherein the slot forms a helix.
Claim 7
Dependent Claim 17 words
An intravascular catheter as in claim 1 , wherein the metallic tube comprises a super elastic alloy.
Claim 8
Dependent Claim 20 words
An intravascular catheter as in claim 1 , wherein the outer layer comprises a polymer tube having a gradient durometer.
Claim 9
Dependent Claim 18 words
An intravascular catheter as in claim 1 , wherein the inner layer extends proximally into the transition region.
Claim 10
Dependent Claim 18 words
An intravascular catheter as in claim 8 , wherein the inner layer extends proximally into the proximal portion.
Claim 11
Dependent Claim 98 words
An intravascular catheter, comprising an elongate shaft including a proximal stiff metallic tube having a distal portion, a distal flexible tube connected to and extending distally from the distal portion of the metallic tube, the flexible tube including a coil reinforcement disposed between an inner layer and an outer layer, the distal portion of the metallic tube having a portion removed to define at least one void which decreases the stiffness of the metallic tube, wherein a portion of he coil reinforcement is disposed in the void and wherein the outer layer extends proximally over the transition region.
Claim 12
Dependent Claim 98 words
An intravascular catheter, comprising an elongate shaft including a proximal stiff metallic tube having a distal portion, a distal flexible tube connected to and extending distally from the distal portion of the metallic tube, the flexible tube including a coil reinforcement disposed between an inner layer and an outer layer, the distal portion of the metallic tube having a portion removed to define at least one void which decreases the stiffness of the metallic tube, wherein a portion of he coil reinforcement is disposed in the void and wherein the outer layer extends proximally over the transition region.
Claim 13
Dependent Claim 19 words
An intravascular catheter as in claim 10 , wherein the void gradually decreases the stiffness of the metallic tube.
Claim 14
Dependent Claim 14 words
An intravascular catheter as in claim 11 , wherein the void comprises a slot.
Claim 15
Dependent Claim 14 words
An intravascular catheter as in claim 12 , wherein the slot forms a helix.
Claim 16
Dependent Claim 17 words
An intravascular catheter as in claim 10 , wherein the metallic tube comprises a super elastic alloy.
Claim 17
Dependent Claim 20 words
An intravascular catheter as in claim 10 , wherein the outer layer comprises a polymer tube having a gradient durometer.
Claim 18
Dependent Claim 18 words
An intravascular catheter as in claim 10 , wherein the inner layer extends proximally into the transition region.
Claim 19
Dependent Claim 18 words
An intravascular catheter as in claim 16 , wherein the inner layer extends proximally into the proximal portion.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2006-11-24 2007-05-26 2007-11-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2010-11-24 2011-05-26 2011-11-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2014-11-24 2015-05-26 2015-11-25 $7700.00 Window Closed / Lapsed

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